 
          Challenges
        
        
          •
        
        
          How will 1L immmune checkpoint inhibitors therapy affect
        
        
          treatment selection in subsequent therapy lines?
        
        
          •
        
        
          What is the optimal/rationale cut off for PDL1 positivity?
        
        
          •
        
        
          What is the role of other investigational correlates, such as gene
        
        
          expression profiles? Mutation burden?
        
        
          •
        
        
          Potential combinations
        
        
          –
        
        
          Anti–PD-(L)1 plus anti–CTLA-4
        
        
          –
        
        
          Immune checkpoint inhibitors plus CT, or other modalities such
        
        
          as RT
        
        
          –
        
        
          Sequential approach